(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two charges each +4 microcoloumbs ar eon the x axis, one at the origin and one at x=8m. Find the electic field at the x axis at x=10m and x=2m.

2. Relevant equations

E=kq/r

3. The attempt at a solution

I tried the x=10m first. What I did was take E1=kq/r^2, or (8.99x10^9*4mC)/8^2 and E2=kq/r^2, or (8.99 x 10^9*4mC)/2^2, and then added E1 and E2 up.

And it was wrong. Am I doing it wrong?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Electric fields

**Physics Forums | Science Articles, Homework Help, Discussion**